Pipe and nut wrench.



G. A. PARMENTER.

PIPE AND NUT WRENCH- APPLICATION FILED JUNE 2. 1915.

Patented Oct. 5, 1915.

12255972 8022 Geogye A. P627 vzaeizei ED STATES PA GEORGE A. PARMENTER,OF BOSTON, MASSACHUSETTS.

PIPE AND NUT WRENCH.

To all whom it may concern:

Be it known that I, GEORGE A. PARMENTER, citizen of the United States,residing at Boston, Massachusetts, have invented certain new and usefulImprovements in Pipe and Nut Wrenches, of which the following is aspecification.

My invention is a pipe and nut wrench, and my aim is to provide a verysimple construction'of few parts, effective in use, and not liable toget out of order.

In the accompanying drawing, Figure 1 is a side elevation with parts ofthe interior construction shown in dotted lines; Fig. 2 is a back view,and Figs. 3, 4 and 5 show details of the casing.

The handle and main body of the wrench shown at A, may be of any usualform as to its main shape and handle portion, but the shank is providedat its extreme end with a serrated face a, and a slightly inclinedoverhanging wall I), and is also provided with notches c. A casing Bfits over the shank and its front walls have a pin cl connecting them,and this pin is adapted to engage the notches 0. The outer jaw C iscarried by the casing B, as shown in Fig. 1, and has a serrated edge aoverhanging the complementary end a of the shank. The jaw C is pivotedto the casing B at e and has a slightly tapering end extending into thecasing between the rear thereof and the wall of the shank as shown at f,and the inner face of the jaw is provided with a series of notches 0.lower end 5 normally pressed outwardly by a spring h, which is fastenedat its upper end i, to the shank while its lower end presses against therear inner wall of the casing and thus has a tendency to keep the pin (Zengaged with one of the recess-es 0.

The casin B has a de endin fin 'er iece 70 serrated or roughened, andwhen it is desired to change the relation of the gripping jaws thefinger piece is pressed inwardly, which disengages the pin d from thenotch 0 and permits the casing B to be adjusted up .or down, and afterthis adjustment has taken Specification of Letters Patent.

Application filed June 2, 1915.

The casing B has its Patented Oct. 5, 1915.

Serial No. 31,717.

into one of a series of recesses c" in the jaw C, to which reference hasbeen made. As the casing 13 is pushed. inwardly at its lower end todisengage pin (Z from its notch the same action disengages the notchesof the upper jaw from the projection Z, and

when the parts are returned under the pressure of the spring h to normalposition both the pin (Z and projection Z engage the notches in linetherewith and thus hold the jaws very securely in gripping position.

My construction is exceedingly simple and Figs. 3, t and 5 show thecasing detached, Fig. 3 being a back view of Fig. i, which is a sideview of the casing, while Fig. 5 is a front view.

What I claim is 1. A. pipe and nut wrench comprising a shank and handle,a casing connected to the shank adjustably and slidably, an outer jawpivotally connected to the casing anda looking connection between theouter jaw and the shank, said connection being adjustable,

and a gripping surface carried by the shank, substantially as described.

2. In a pipe wrench a shank, a casing carried thereby, said shank havinga notched edge and a pin carried by the casing adapted to engage saidnotches, an outer jaw pivoted to the casing and having a shank dependingwithin the same, said shank having notches, and a projection on theshank of the handle portion engaging said notches and cooperating withthe notchesand pin of the shank and easing, substantially as described.

In testimony whereof, I {llliX my signature in presence of twowitnesses.

GEORGE A. PARMENTER.

Witnesses FRANK P. Cnooirronn, CHAS V. SANDBERG.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

